Imaging system and method using primary and scattered radiations
OwnerFeng Mainventor
Life of this patent
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Abstract
An imaging system and method configured to construct an image of an internal structure of an object. The imaging system including: a radiation source configured to generate both a narrow beam and a wide beam of radiation; a detector configured to detect the radiation; and at least one processing circuit configured to: determine a scatter-to-primary ratio (SPR) of the wide beam based on the narrow beam; determine a primary component of the wide beam based on the SPR to thereby separate the primary component from a scattered component of the wide beam; and construct the image using the primary component.
Claims20
A computed tomography (CT) imaging system configured to construct an image of an internal structure of an object, the imaging system comprising:
- a radiation source including a collimating or a blocking device configured to generate both a narrow beam and a wide beam of radiation;
- a detector configured to detect the radiation;
- and
- at least one processing circuit configured to:
- determine a scatter-to-primary ratio (SPR) of the wide beam based on the narrow beam;
- determine a primary component of the wide beam based on the SPR to thereby separate the primary component from a scattered component of the wide beam;
- and
- construct the image using the primary component.
An image reconstruction method for Computed Tomography (CT), the method comprising:
- determining a scatter-to-primary ratio (SPR) of a wide beam based on a narrow beam;
- determining a primary component of the wide beam based on the SPR to thereby separate the primary component from a scattered component of the wide beam;
- and
- constructing an image of an internal structure of an object using the primary component.
A non-transitory computer-readable medium having instructions stored thereon, the instructions comprising:
- transmitting a narrow beam of radiation through an object onto a detector array;
- transmitting a wide beam of radiation through the object onto the detector array;
- recording radiation levels at a plurality of positions along a path of the narrow beam using the detector array;
- calculating a scatter-to-primary ratio (SPR), using a computer model, as a function of position;
- separating primary and scattered components of the wide beam based on the calculated SPR;
- constructing a first set of CT images using the primary component;
- and
- constructing a second set of CT images using the scattered component.
Dependencies are inferred from the claim text.